Stop log winch



Dec. 22, 1931. T. D. KENNEDY ET AL 1,837,909

STOP LOG WINCH Filed Feb. 14, 1951 2 Sheets-Sheet 1 UTUQTI for:

T D-Ke'rnneay J. J. Keon Dec. 22, 1931. T. D. KENNEDY ET AL 1,837,909

STOP LOG WINCH Filed Feb. 14, 1931 2 Sheets-Sheet 2 eh m ,0 ivi -za.

M nvenfors T4 D.Kerrnec5ly J. J Keon Patented Dec. 22, 1931 warrenSTATES PATENT creme THOMAS DOVSLEY KENNEDY AND JAMES JOSEPH KEON, OFOWEN SOUND, ONTARIO, CANADA, ASSIGNORSTO WILLIAM KENNEDY & SONS,LIMITEDyOF OWEN SOUND,

ON TARIO, CANADA STOP LOG WINCH Application filed February 14, 1931.Serial No. 515,778.

This invention relates to apparatus for raising, lowering and pilingstop logsused in stop log'dams and our object is to provide simpleapparatus ofthis character in which the members of the ram, for raisingthe logs from and lowering them into the stop log checks in adjacentpiers of the dam, are so arranged that the tendency of the current tocarry them out of position for engagement with the logs at the bottom ofthe checks will be overcome. A further object is to provide simple meansfor transferring the logs from the ram to a log piling device and viceversa. A still further object is to provide a point of weakness in themechanism for. operating and guiding the rain members whereby aninexpensive and readily replaced part will be broken should theoperating mechanism be clogged by ice m or floating pieces of timberpicked up by it.

We attain our obj ectsby diverging the ram members so that as themembers are moved downwardly their lower ends are spread apart to bringthem closer to the inner walls of the checks in the piers of the dam.The apparatus includes a. frame which spans the space between acentpiers, the ram members being slidably mounted on suitable guides locatedat opposite ends of the frame. The rain members may be centrallylocated, or be located elf center upstream or downstream. relative tothe upstream and downstream sides of the frame to suit conditions on thedam. The logs removed from the dam are piled on the piers by a logpiling conveyor which is located above the main members of the saidframe. To transfer the logs from the ram to the log piling conveyor. weprovide a log transfer conveyor which is mounted on the underside of thesaid main members. The ram is operated by means of a rack and pinion.the rack being carried by the ram and held in operative position bymeans of a thrust roller engaging the side of the ram remote from thepinion. The

Fig. 2 a plan view on a smaller scale of;

the. parts shown in Fig. 1 and showing more of the dam construction;

3 a section on the line 3'3in Fig. 1;

Fig. 4 a detail, partly in section, of a lower ram guide;

Fig. 5 a cross sectional detail of one end of a stop log showing the ramengaged therewith;

Fig. 6 a plan view of one end of a stop log and Fig. 7 a detail in planof an upper ram guide, the ram member being shown in crosssection.

p In the drawings like numerals of reference indicate correspondingparts in the difierent figures.

A stop log dam comprises two or more piers 1 which are provided withchecks 2 for receiving the opposite ends of stop logs 3 which span thespace between adjacent piers. The logs are raised from and lowered intothe checks by means of a ram comprising two members 4: having detachableconnections with *a log. Preferably these connections comprise anundercut slot 5 at each end of a log in its upper face and these slotsmay be formed by recessing the logs and covering the recesses by platesor irons 5* having slits formed therein. An arrow 6 or inverted T-shapedrod is carried by each member 4 and these arrows are adapted to bepassed through the slits or spaces inthe plates at the opposite ends ofa log so that when each arrow is turned one-quarter revolution in itsrecess it will engage the underside of its overlying plate. As thisarrangement for forming a detachable connection between a ram and a stoplog is well known in the art, the details of construction for mountingand turning the arrows on the ram members need not be described.

The ram members 4 are vertically slidable on the frame 10 of the winchapparatus and in the checks 2 for the purpose of guiding the arrows 6into the slits in the log plates 5*. Much difficulty is experienced inpreventing the rams 4 from working out of the checks 2 especially whenthe rams are being lowered for engagement with the lowermost log becausethe Water flowing over the log enters the checks and tends to dislodgethe rams therefrom. In other words eddying currents are set up betweenthe inner walls 2 of the checks and the sides of the ram members 4adjacent thereto and these currents tend to move the rams out of thechecks and thus move the arrows out of position for engagement with theslits in the log plates 5*. To overcome this difficulty we provide meansfor spreading the lower ends of the ram members 4 apart so that thelower ends will tend to engage the inner walls 2* of the checks 2.

The ram members are vertically slidable in upper and lower guides 7, 8,the lower guides 8 being carried on the main members 9 of the 7 frame:10 of. the apparatus and located at the opposite ends of the saidmembers 9. The upper guides 7 are adjustably mounted for lateraldisplacement on towers 10 which are suitably carried on the members 9.Each of the guides 7 comprises an annular slide 7*, see Figs. 7 and 1,adapted to slidably receive a ram member 4. The slide is provided withflanges 7 b which rest on supporting blocks 7 andare connected therewithby bolt and slot connections 7 The blocks 7are provided with lugsthrough which are threaded adjusting screws 7 for moving the slides awayfrom and towards one another. By loosening the inner screws 7 awayfromflthe inner sides of the slides 7" and tightening the outer screwsagainst both slides, the latter, and thus the upper ends of the rammembers'4, will be moved towards one another. This movement of the rammembers causes them to rock in their lower guides 8 and thus the lowerends of the members will be swung away from one another and towards theinner walls 2 of the checks, From this construction it is obvious thatthe members 4 may beso'diverged that their lower ends may be broughtinto contact with the inner walls 2 at any desired point beneath thewater line. It is also obvious that the farther the ram members 4 arelowered below the above mentioned point, the tighter they will contactwith the inner walls 2 and thus any springiness in the members, as thedistance between the lower ends thereof and the guides 8 increases, iscompensated.

The guides 8 are located substantially centrally between the front andrear sides and at opposite ends of the main members 9 of the frame 10 ofthe apparatus. These members 9 span the space between adjacent piers 1and if more than two piers be used in one dam the members will becarried on trucks which run on tracks so that the one apparatus may beused to raise or lower the logs between any two of the piers. It willthus be seen that the main frame members 9 limit the up)ward movement ofthe logs by the ram mem ers 4 and also prevent the usual log pilingconveyor 11 from engaging the raised log supported on the ram.Heretofore' it has been the general practice to place a skid formed ofcrowbars or pieces of timber under the log, when it is raised by the rammember above the top of thevpiers 1, so that the log may beslidlaterally of the frame members 9 to a position in which it may beengaged by the conveyor 11. To overcome this objectionable feature ofmanually skidding the logs to and from the ram, we provide a logtransferring conveyor 12 which comprises tracks 13 arranged transverselyof the frame members 9 and secured to the underside thereof between theram members 4. On the tracks are mounted trolleys 14 from which aresuspended any suitable stirrups 15 adapted to be disconnectedintermediate their ends or at their connection with the trolleys so thatthey may be passed around the underside of the log and re-connectedwhile the latter is being supported in its raised position by the rammembers 4. The ram is then lowered until the log is supported by thestirrups 15. The arrows 6 are then turned one-quarter revolution torelease the ram members 4 and the latter are raised to clear the logwhich is now free to be moved laterally by the transfer conveyor 12. Thelatter is thus adapted to move a log from beneath the main frame members9 and position it for engagement by the log piling conveyor 11 which ismounted above the members 9 so that it may raise the logs to asufiicient height to pile them on top of the piers. The conveyor 12transfers the logs from the piling conveyor 11 to the ram members 4 whenthe logs are being inserted in the checks 2.

The guides 8 are provided with bearings 16 in which pinions 17, whichmesh with racks 18 carried by the ram members 4, are journalled. Thesides of the members 4 remote from the pinions are engaged by thrustrollers 19 each of which is journalled in pivoted arms 20 which arepivoted at 23 in the guides 8. Each of the thrust rollers 19 is held inits operative position by means of bolts 21 which connect the arms 20with lugs 22 cast on the guides. These parts are so designed that thebolts 21 will break should the thrust on the rollers 19 exceed apredetermined maximum. As a supply of bolts which are inexpensive may bereadily carried and a broken bolt may be readily replaced, any damage,caused by ice formation on the racks or by either of them picking upforeign matter such as floating pieces of wood, will not be serious.

Any suitable means may be provided to limit the swinging movement of thearms 20 away from the ram members 4 when the bolts 21 break so that theram members will be prevented from dropping by gravity. That is to saywhile the breakage of the bolts will permit the ram members and thus theracks 18 carried thereby to move relative to the pinions 17, thismovement is limited so that the teeth on the racks will not be demeshedfrom the teeth on the pinions. To permit a thrust roller 19 to swingaxially if only one of its bolts 21 should break, we provide a swivelconnection between the arms 20 and their pivots 2 3. This connection maybe formed by tapering or countersinking the hole through each arm fromthe opposite sides thereof, whereby the contact with the pivot 23 willbe substantially midway'between the sides of the arm and the latter willbe free to rock on its pivot.

The pinions 17, see Figs. 4, 1 and 2, may be driven in any suitablemanner from any suitable source of power to raise or lower the rams 4.

What we claim as our invention is:

1. Apparatus for raising stop logs out of checks in a stop log damincluding a ram comprising two members vertically movable in the checksfor engagement with the opposite ends of a stop log, the said membersbeing mounted in divergent positions whereby their lower ends spreadtowards the inner walls of the checks while the members are beinglowered relative thereto.

2. Apparatus for raising stop logs out of checks in a stop iog damincluding a ram compris ng two members vertically movable in the checksfor engagement with the opposite ends of a stop log; and a set of upperand lower guides for slidably receiving each of the members, the guidesof each set being positioned relative to one another to cause the lowerends of the members to be spread away from one another and towards theinner walls of the checks while the members are being lowered.

3. Apparatus for raising stop logs out of checks in a stop log damincluding a ram comprising two members vertically movable in the checksfor engagement with the opposite ends of a stop log; and a set of upperand lower guides for slidably receiving each of the members, the guidesbeing adjustable relative to one another for diverging the members tospread their lower ends apart while they are being lowered. V

4:. Apparatus for raising, lowering and piling stop logs used in a stoplog dam including a vertically movable ram for engaging-a stop log; alog-piling conveyor movable laterally of the ram; and a log transferringconveyor movable transversely of the ram and adapted to convey the logsfrom the ram to a position in which they may be engaged by the pilingconveyor.

5. Apparatus for raising lowering and iling stop logs used in a stop logdam including a frame adapted to span the space between adjacent piersof the dam; a vertically movable ram carried by the frame for engaging astop log to raise it from and lower it into the dam; a log pilingconveyor mounted on the apparatus above the said frame to move laterallyof the ram; and a log transferring conveyor mounted on the underside ofthe said frame to move transversely thereof for conveying logs from theram to a position in which they may be engaged by the piling conveyorand vice versa.

6. Apparatus for raising and lowering stop logs used in a stop log damincluding a vertically movable ram for engaging a stop log to raise itfrom and lower it into the dam;

- and a conveyor carried by the apparatus for conveying a log laterallyfrom and to the ram.

7. Apparatus for raising. lowering and piling stop logs used in a stoplog dam including a frame adapted to span the space between adjacentpiers of the dam; a vertically movable ram carried by the frame forengaging a stop logto raise it from and lower it into the dam; and aconveyor mounted on the underside of the said frame to move transverselythereof for conveying logs to and from the ram.

8. Apparatus for raising and lowering stop logs used in a stoplog damincluding a vertically movable ram for engaging a stop log to raise itfrom and lower it into the dam; and a conveyor carried by the apparatusincluding detachable stirrups adapted for conveying a log laterally fromand to the ram.

9. Apparatus for raising, lowering and piling stop logs used in a stoplog dam including a frame adapted to span the space between adjacentpiers of the dam; a vertically movable ram carried by the frame forengaging a stop log to raise it from or lower it into the dam; a tracksecured to the underside of the frame and projecting laterallytherefrom; and a trolley mounted on the track and provided with acarrier for conveying logs to and from the ram.

10. Apparatus for raising and lowering stop logs used in a stop log damincluding a ram for engagement with a stop log; a rack carried by theram; a pinion meshed with the rack; a guide for the ram comprising acasting in which the pinion is journalled; an arm pivoted on thecasting; a thrust r011 journalled on the arm for engaging the side ofthe rain remote from the rack; and a bolt arranged transversely relativeto the axis of the pivoted connection for connecting the arm and thecasting, to form a point of Weakness.

Signed at the city of Owen Sound, Canada;

j this 16th day of January, 1931.

THOMAS DOWVSLEY KENNEDY. JAMES JOSEPH KEON.

